added test with custom elements
fixed test
fixed test for custom elements
simplified test for custom elements
added functionality to add custom elements
added test for custom namespaces
implemented functionality for custom namespaces
updated readme
fixed jshint error
changed object names to fit conventions
fixed indentations
changed namespace iteration style
Merge pull request #35 from maxnowack/master

added support for custom elements and namespaces
update readme and dependencies
fix space